Class III Estimate for Regional Consolidation Shelby Class III Estimate for Regional Consolidation Riverbend Water Resource District

Phasing Diagram Shelby Industrial Raw Water Demand 10 MGD by 2026 Raw Water Capacity 30 by 2031 13 MGD - lowest immediate demand Industrial Use 40 by 2036 50 15MGD reuse treatment 60   Member cities transfer 1A 2026 30 MGD multi-level takeoff New Boston 1B DeKalb I Clarksville 2A 2031 60 MGD intake tunnel (3+1) X 10 MGD = 30 MGD High Service Pumping (3+1) X 8.3 MGD 2B 2036 3A 2045 Raw Water Supply Line - 60 MGD 8.3 MGD WTP Treatment Train Upgrade 3B 2055 (2) X 10 MGD = 20 MGD X MGD Ground Storage WTP to Riverbend TieIn Raw Water Flow to WTP Riverbend WTP to Redwater Alt 4B (1) X 10 MGD = 10 MGD ? +2X10 Redwater Elevated tank 20 Flow Split Box Annona to Clarksville Existing 30 inch line repair/replace (3+1) X 10 MGD = 30MGD City of Annona 205,000 gal +1X10 City of Avery 218,000 City of De Kalb 238,000 Central Bowie County 320,000 City of New Boston 698,000 (3+0) X 10 MGD = 30MGD TAC 200,000 1,230,000 10 MGD WTP Treatment Train 3,585,000 1,100,000 City of Redwater (Phase II) 15,300,000 City of Redwater 12,500,000 Potable Water Production Capacity 53,000 25 upgrade to 27 +/- 30 +/- Expand by 2045 (?) X ? MGD = ? MGD To IP 2.5 MGD WTP Treatment Train Domino Existing IP Intake and PS Queen City Atlanta Shelby

Phasing Diagram Shelby

Phase 1A and 1B (of modified alternative 3): Raw water backbone to 60MGD Raw water capacity at 30 MGD (10 MGD industrial/20 MGD water production) 25 MGD water production capacity Distribution – TAC and New Boston Shelby Top Keys to Success" as 1. Listening 2. Hydraulics 3. Anticipating Operating Challenges 4. Long term view but short term solutions KEEP Circling back

Phase 1A and 1B (of modified alternative 3): Opinion of Probable Construction Cost, O&M Cost and Annual Expense Phase 1A&1B combined Phase 1A and 1B (of modified alternative 3): Raw water backbone to 60MGD Raw water capacity at 30 MGD (10 MGD industrial/20 MGD water production) 25 MGD water production capacity Distribution – TAC and New Boston Matt Wilson Creek LS? DRAFT COSTS

Phase 4B –Potable Water supply 2.5 MGD water production capacity Opinion of Probable Construction Cost, O&M Cost and Annual Expense Phase 4B Phase 4B –Potable Water supply 2.5 MGD water production capacity Raw water sidestream off IP raw water pump station Pre-chlorination by IP Distribution – serving Atlanta, Domino, and Queen City Matt Wilson Creek LS? DRAFT COSTS

Replacing New Boston Rd. Capacity Buildout Replacing New Boston Rd. Capacity Domestic potable Water - New Boston TAC Industrial Demands Ultimately serving: Redwater, DeKalb, Central Bowie Co., Annona, Avery, Clarksville Matt A Listening – PIC, PM, Design Staff – Listen and understand Client needs Anticipating Operating Challenges – Translates to knowing challenges Hydraulic flexibility Long term view We need to include comments on Subs value

Buildout Phase 2A Phase 1A/1B Phase 1A Phase 2B Phase 1B Phase 4B Matt A Listening – PIC, PM, Design Staff – Listen and understand Client needs Anticipating Operating Challenges – Translates to knowing challenges Hydraulic flexibility Long term view We need to include comments on Subs value Phase 4B

Opinion of Probable Construction Cost - All Phases Construction Cost $124.3M, without distribution Raw Water System supply to 120 MGD Potable water production to 40 MGD Cass County potable water production to 2.5 MGD Industrial Reuse for 15 MGD Potable water distribution for region Matt Wilson Creek LS? Construction Cost $12.5M, without distribution Total Capital Costs include: Engineering, Feasibility Studies, Finance, Legal and Bond Counsel. As well, these estimated costs include Power Connection, Land Acquisition and Survey, and interest during construction. DRAFT COSTS

Capital Cost – O&M Cost – Debt Service Operating and Maintenance Costs Matt Wilson Creek LS? DRAFT COSTS